日光温室的天窗应设在建筑物的最高处,以利排放湿、热空气,在冷凉季节一般只用天窗通风换气,所以天窗开放得特别多。前几年最常用的方法是“开膛破肚”通风法,即大棚顶上纵向开一道长缝,缝的长短、宽窄及开放时间随当时的温、湿度灵活掌握。这种方法使用起来很方便,但它有一个致命的缺点,就是当做风口的那部分棚膜由于上下拉来拉去,影响到整个大棚容 Solar greenhouse roof should be located at the highest point of the building to facilitate the release of wet and hot air, usually in the cold season only the roof ventilation, so the skylight was particularly open. A few years ago the most commonly used method is “open broken belly ” ventilation method, that is, the roof to open a longitudinal slit on the top, the length of the seam, width and opening hours with the temperature and humidity flexibility. This method is very easy to use, but it has a fatal flaw, that is, as part of the tuyere film due to pull up and down, affecting the entire greenhouse capacity